Creating a mega team

I’m in a funky, 20 man keeper league. I like my chances for this year. Starters are currently
Big Ben
Aaron Jones
Keenan Allen
Adam Thielen
Mark Andrews
Flex: James Robinson

I also have Tee higgins and Brandin Cooks waiting on the bench (with no other running backs).

Do I try to trade away James Robinson and Brandin Cooks for Deandre and JD McKissic? Is that leaving me too bare at RB? Starting squad would be stacked though.

And what about the same two for DK and Mark Ingram